Speed ​​?? vacuum pump, brushless motor vacuum pump, not only has the characteristics of long life, but also has other unparalleled vacuum pump features: First, long life: all moving parts are durable products, with imported high-quality brushless motor, Improve pump life in all directions Second, the leading brushless motor technology: In addition to providing two power lines (positive and negative), an additional "PWM speed control, motor feedback, motor start and stop," the three signal lines, truly "full-featured"; Through the duty cycle to adjust the motor speed, change the pump output flow, you can always maintain a constant flow, you can also suddenly suddenly slow, arbitrary. Third, low interference: there will be no clutter pollution of power supply, interference with electronic components, it will not have any interference to the control circuit. Fourth, comes with overheating, overload Double protection: Even full load long-term continuous 24 hours of work, can effectively protect the pump is not damaged, with perfect self-protection; pocket volume, less than the micro-particle chewing gum; especially suitable for Need a long time continuous work of the occasion. Such as online sampling, closed container vacuum, gas circulation, pumping, breathing and so on.